// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ASH_SYSTEM_FOCUS_MODE_SOUNDS_SOUND_SECTION_VIEW_H_
#define ASH_SYSTEM_FOCUS_MODE_SOUNDS_SOUND_SECTION_VIEW_H_

#include "ash/ash_export.h"
#include "ash/system/focus_mode/focus_mode_util.h"
#include "ash/system/focus_mode/sounds/focus_mode_sounds_controller.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/views/view.h"

namespace views {
class BoxLayoutView;
class FlexLayoutView;
}  // namespace views

namespace ash {

class PillButton;
class PlaylistView;

// Number of playlists for focus mode.
inline constexpr size_t kFocusModePlaylistViewsNum = 4;

// These are views that represent a list of playlists and we toggle between
// `Focus Sounds` or `YouTube Music` sound sections using the slider button in
// the focus panel. When a non-premium user toggles to show the `YouTube Music`
// sound section, we will create and show the alternate view instead.
class ASH_EXPORT SoundSectionView : public views::View {
  METADATA_HEADER(SoundSectionView, views::View)

 public:
  explicit SoundSectionView(focus_mode_util::SoundType type);
  SoundSectionView(const SoundSectionView&) = delete;
  SoundSectionView& operator=(const SoundSectionView&) = delete;
  ~SoundSectionView() override;

  // Updates the contents in `playlist_view_list_`, e.g. the image view, title,
  // id of a playlist.
  void UpdateContents(
      const std::vector<std::unique_ptr<FocusModeSoundsController::Playlist>>&
          data);

  // True to show `alternate_view_`; otherwise, show `playlist_views_container_`
  // instead.
  void ShowAlternateView(bool show_alternate_view);
  void SetAlternateView(std::unique_ptr<views::BoxLayoutView> alternate_view);
  bool IsAlternateViewVisible() const;

  // Updates the state of `PlaylistView` for the newly `selected_playlist` and
  // reset the state of `PlaylistView` for unselected playlists.
  void UpdateStateForSelectedPlaylist(
      const focus_mode_util::SelectedPlaylist& selected_playlist);

  // Updates the state of `PlaylistView` for the existing selected playlist.
  void UpdateSelectedPlaylistForNewState(focus_mode_util::SoundState new_state);

 private:
  void CreatePlaylistViewsContainer(focus_mode_util::SoundType type);

  const focus_mode_util::SoundType type_;
  std::vector<PlaylistView*> playlist_view_list_;
  raw_ptr<views::FlexLayoutView> playlist_views_container_ = nullptr;

  // For a non-premium users, the "YouTube Music" `playlist_views_container_`
  // will not be populated. For this case, we will set an alternate view (e.g. a
  // non-premium view defined in `FocusModeSoundsView`) and show it instead.
  raw_ptr<views::BoxLayoutView> alternate_view_ = nullptr;
  raw_ptr<PillButton> learn_more_button_ = nullptr;

  base::WeakPtrFactory<SoundSectionView> weak_factory_{this};
};

}  // namespace ash

#endif  // ASH_SYSTEM_FOCUS_MODE_SOUNDS_SOUND_SECTION_VIEW_H_